Zhou Kaina, Wang Wen, Ning Fan, Wang Xiao, Zhao Fang
School of Nursing, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China.
Shaanxi Provincial Tumor Hospital, Xi'an, Shaanxi, China.
J Eval Clin Pract. 2025 Mar;31(2):e14110. doi: 10.1111/jep.14110. Epub 2024 Aug 18.
RATIONALE, AIMS AND OBJECTIVES: Psychometrics of the Chinese Life Attitude Self-rating Questionnaire for Breast Cancer (LASQ-BC) has not yet been conducted in a larger sample of women with breast cancer. This study aimed to examine the reliability, validity, and sensitivity of the LASQ-BC in Chinese mainland female breast cancer patients.
This is a cross-sectional study. Reliability was determined by Cronbach's α and Guttman split-half coefficient. Convergent and discriminant validity were evaluated via item-subscale and item-total score correlations. Factorial validity was estimated using a principal component analysis with varimax rotation. Sensitivity was identified via Cohen's effect size (ES) and an independent sample t-test between the new and recurrent cases. Multiple linear regression analysis was used to further examine sensitivity of the LASQ-BC under the influence of newly diagnosed breast cancer (yes vs. no).
A total of 429 patients completed the questionnaire. Cronbach's α of the LASQ-BC was 0.96, ranging from 0.86 to 0.92 for the four subscales (i.e., choice and responsibility, life meaning, benevolence, and life experiences). The Guttman split-half coefficient was 0.90. The hypothesised item-subscale and item-total score correlations were higher than the critical value of 0.50. Four factors were extracted from the 23 items, explaining 69.29% of the total variance. Eligible ES (range: 0.38-0.48) was found in the four subscales and total score between the new and recurrent cases (independent sample t-test), and under the influence of newly diagnosed breast cancer (yes vs. no; multiple linear regression analysis).
The Chinese LASQ-BC has acceptable reliability, validity, and sensitivity in women with breast cancer of mainland China. It can be used to female breast cancer patients as an invaluable metric and a crucial instrument for assessing and discerning those grappling with a suboptimal life attitude, and in gauging the efficacy of psychological interventions tailored to enhance this perspective.
研究理由、目的和目标：尚未在更大样本的乳腺癌女性中对中文版乳腺癌生活态度自评问卷（LASQ - BC）进行心理测量学研究。本研究旨在检验LASQ - BC在中国内地女性乳腺癌患者中的信度、效度和敏感性。
这是一项横断面研究。通过克朗巴哈α系数和古特曼折半系数确定信度。通过项目 - 子量表和项目 - 总分相关性评估收敛效度和区分效度。使用主成分分析和方差最大旋转估计因子效度。通过科恩效应量（ES）以及新发病例和复发病例之间的独立样本t检验确定敏感性。采用多元线性回归分析进一步检验LASQ - BC在新诊断乳腺癌（是与否）影响下的敏感性。
共有429名患者完成问卷。LASQ - BC的克朗巴哈α系数为0.96，四个子量表（即选择与责任、生活意义、仁爱和生活经历）的系数范围为0.86至0.92。古特曼折半系数为0.90。假设的项目 - 子量表和项目 - 总分相关性高于临界值0.50。从23个项目中提取出四个因子，解释了总方差的69.29%。在四个子量表和总分中，新发病例和复发病例之间（独立样本t检验）以及在新诊断乳腺癌影响下（是与否；多元线性回归分析）发现了符合条件的效应量（范围：0.38 - 0.48）。
中文版LASQ - BC在中国内地乳腺癌女性中具有可接受的信度、效度和敏感性。它可作为一种宝贵的测量工具用于女性乳腺癌患者，是评估和识别那些生活态度欠佳者以及衡量为改善这种观念而量身定制的心理干预效果的关键工具。
